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RESULTS

The group means (± SEMs) obtained in the two sessions are given in Tables 1 and 2.

Oxygen consumption, breath volume
The paired t-test showed a 25.2% decrease in oxygen consumption after guided relaxation (p<.001). Breath amplitude increased by 15.0%, after guided relaxation (p<.01).

Autonomic measures and breath rate
The paired t-test showed significant differences during guided relaxation compared to the respective Before values for the following parameters, (i) skin conductance level reduced by 35.6%, (p<.05);

TABLE 1

Means and Standards error of the means (SEMs) of Oxygen Consumption and Breath volume before and after guided relaxation and supine rest (n = 25)
 

VARIABLES GUIDED RELAXATION SUPINE REST
Pre Post Pre Post
M SEM M SEM M SEM M SEM
1. Oxygen Consumption (ml/min ) 768.8 55.1 574.9 † 42.5 618.1 66.3 573.4 58.7
2. Breath Volume (ml) 906.2 57.0 1042.3* 59.0 949.7 59.2 1009.9 64.2
*p<.02, † p<.01, paired t -test, "After" compared to "Before"

TABLE 2

Subjects with base line ratio of > 0.5 Subjects with base line ratio of < 0.5
Guided
Before
Relaxation After Supine
Before
Rest
After
Guided
Before
Relaxation After Supine
Before
Rest
After
.73 .24 .54 .83 .47 1.27 .41 .44
.60 .38 .68 .52 .49 .55 .49 .36
3.17 .54 .77 1.47 .48 .59 .30 .38
.82 .24 .72 .68 .41 .33 .32 .30
.76 .47 .59 .26 .44 .42 .46 .43
.94 .40 .65 .64 .50 .22 .34 .52
.51 .50 .73 .57     .50 .32
.61 .42 .69 .46        
.53 .78            


(ii) heart rate reduced by 9.7%, (p<.001); (iii) low frequency component reduced by 15.5%, (p<.05), (iv) high frequency component increased by 9.8%, (p<.05). During supine rest compared to the preceding period significant changes occurred in: (i) skin conductance level reduced by 27.0%, (p<.01); (ii) heart rate decreased by 6.5%, (p<.01), also finger plethysmogram amplitude reduced by 25.8%, After supine rest compared to Before (p<.01). The Wilcoxon paired signed ranks test showed a significant decrease in the LF/HF ratio after guided relaxation, for subjects with baseline LF/HF >0.5 (Group I) (p<.05(1); n=9).
 

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